Safety-razor blade.



0'. KAMBFE. SAFETY RAZOR BLADE. 7 APPLICATION FILED JAN. 10,1910.

Patnted Feb. 28, 1911.

UUHJU mmmmv illNML-H UNITED sTArEs PglENT OFFICE.

or'ro warn; or NEW roan, n. Y., assrenon r0 xmrrn 1230 s., A coaromrronor NEW YORK. 1

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To all whom itmay concern:

Be it known that I, 0116 Knmrrn, a citi-' zen'of the United States,residing in'the borough of Brooklyn, in the county of Kings, city andStateof New York, have invented an Improvement in Safety-Razor Blades,of which the following is aspecification. 1 I

Safety razors are commonly provided with blades of thin flexible steelin sets'of a dozen more or less. Many of these blades are normally flatand are'securel held. in a. suitable holder. for use in said atcondition. Other of these-.blades-while normally flatare secured in theholder "for. use in which the blade is transversely bent or flexed butwith a, straightcuttinged e; Other of these normally flat blades havealso been employed in'aholder in which the blade is held transverselyflat but longitu-' dinally bent or flexed so as to present a curvedcutting edge to the face,--whic h. is believed to be moreadvantageousfor use than a straight edge. Q

My invention relates to a tlexiblqsafety razor blade normally fiat,strengthened along one edge, adapted to be held in its normally flatcondition for 'stropping or honing, and yet adapted to be;longitudinally bent and flexed so as to resent a curved cutting edge tothe face in s aving.

In carrying out m invent-ion I rvide a thin normally fiat s eet steelbla e sharpened along one of its longer edges and I secure thereto alongthe opposite edge and in any suitable or desired manner, a frame. ofsuitable material of flattened U-form in cross section, preferably ofskeleton or openwork form. This frame is preferably made of springsteel,-it stifiens the blade, provides for readily holding the blade forhoning or stropping and yet is adapted to yield longitudinally whendesired so asto flex and bend the blade in a suitable holder providedtherefor to present a curved cutting edge to the face in shaving. Theblade of my invention, furthermore, returns when released from theholder to a normally flat condition.

a In the (IraWing,'Fig11re 1 is an elevation, Fig. 2a vertical crosssection, Fig. 3 atop edge view as per Fig. 1., Fig. 4 a bottom edge viewas per Fig. 1. and Fig. 5 a plan of the frame as laid out flat, orbefore the same is bent'up into flattened U-shape; said figuresSpecification of Letters Iatent. ap uemon filed January 10, 1910. SerialNo. 537; 176.

Patented Feb. 28, 191i;

relating to a form of my invention. Fig. 6 is a plan of a frame ofmodified form as laid out flat. Fig. 7 is an elevation and Fig. 8 acentral cross section of still another form 0 my invention.

In igsrl to 5 inclusive, a re resents the blade inwhich 2 is thesharpene edge and 3 the opposite unsharpened edge. These are the longeredges .of the b1ade;=4 representing flattened :U-form or shape in crosssection.- Fig. fi shows the form of this frame before it is bent up intoflattened U-shape. This 'frame is provided with a series of'notches 5extending in from one edge and a series 6 extending. in from theopposite edge, which notches are staggered; that is, so as not to bringthe notches in line, and it will be noticed that these series;- ofnotches extend from the oppositeedges up to the central line of theframe. .Tlierefore when the i.

frame is-bent from the flatform in which it isstamped out into theflattened U-fo'rm to. receive the blade and be firmly clamped "to orotherwise fastened to the blade, there are produced between the innerends of the said notches narrow intervening portions of the sheet steelwhich assist somewhat in the bendingaction. Fig. 3 quite plainlyillustrates this condition.

The blade of my improvement is adapted for use in the holder shown in myapplication for Letters, Patent filed December 9, 1909, Serial #533,998,and the same might be used in the holder shown in my application' filedJuly 20, 1907, Serial #384,798. and might be adapted for use in a frameof different construction so long as the said frame is made with acurved guard comb and devices atthe opposite edges for grasping theblade because with the blade of my present invention the same islongitudinally bent or flexed as inserted in the holder so that when inthe holder the cutting edge is curved toward the face in shaving.

In Fig. 6 I have shown a modified form of frame in which there isproduced a 'ceutral series of apertures 7 in the blade which r in lengthrun transversely of the blade and in series through the centerlongitudinally of the blade, and ma staggered relation to this centralseries there are. series of apertux-es 8 and 9 between the same and theo posite edges of the blade, so that'when t e blade is bent'into.flattened U-form the cen- Q i i 985,419

tral portion is bent at about the center of the openings 7 bet-weenwhich there are preferably narrowthicknesses of the sheet steel toslightly yield in longitudinally bending the blade and the series 8 and9 assist very materially in the bending of the opposite flat faces ofthe U-form.

In the modification shown in Figs"? and 8, the blade a is represented asassociated with a frame I) of flat U-form which frai'ne however isformed of an elastic material such as hard rubber or celluloid and thismay be secured to the frame in'any desired or suitable manner. This like'the other frames is secured to ablade in' a normally flat condition andbecause ofjits inherent resiliency is adapted to bend with the bladelongitudinally so as to flex the bladefor use ina suit-able holder andin use present the sharpened edge 2 in a curved form to the face forshaving. I

In view of the iiormally flat condition of the thin flexible blades ofmy invention, they are preemine'ntly adapted for grinding, honing or'StIOPPllIgSO as to maintain a sharpened edge for use. V

I claim as myrinvention:

1. As anew article of manufacture, a thin flexible steel blade for asafety razor, sharpened alon onelongltudlnal edge and pro vided witi a'yieldable reinforcing frame a along itsopposlte unsharpened edge ot U-form flattened in cross section and adapted tobendwhen the blade isflexed for use from a flat to :1 curved form.

L. As a new article of manufacture, a thin flexible blade of steel .fora safety razor, comprising a rectangular form of steel sharpened alongone longitudinal edge and nnsharpened along the opposite edge and aflattened yieldable reinforcing U-fralne receiving and secured to theunsharpened edge and adapted to bend into a concave-convex form with.the thin razor blade when they same is flex'eclfso as to present acurved'cuttlng'edge to,t.he;face 1n shaving.

3. As a new article of manufacture, 'a thin flexible blade of steel fora safety razor, comprising a rectangular form of steel sharpened alongone longitudinal edge and unsharpened along the opposite .edge, andflattened U-frame receiving and secured to the unsharpened edge and said,frame provided -with series of apertures suitably arranged. at

normally flat steel blade for a safety razor.

sharpened along one of its longest edges and a yieldable reinforcingframe secured to the said blade alongth'e edge opposite" to thesharpened edge and normally flat, and both blade and frame adaptedtobend 0r flex for use when inserted in-a suitable holder,

As a new articleof manufacture,- li thin normally flat steel blade forasafetvrazor, sharpened along one of its longest edges and an open work'frame of sprin sheet metal also normally flat and secured to the saidblade along the edgeopposite to, the sharpened edge and both blade and f'am'e adapted I 'to-bend or flex when inserted in a suitable holder. I

Signed by niethis 3d dayof January 1910.

. a OTTO KAMPF'E. \Vit-nesseszi f.

Geo. T. PINCKNEY,

1C. Zaoxranrxsax.

